ALBANY, Ga. - A stand of American chestnut trees that somehow escaped a blight that killed off nearly all their kind in the early 1900s has been discovered along a hiking trail not far from President Franklin D. Roosevelt's Little White House at Warm Springs. The find has stirred excitement among those working to restore the American chestnut, and raised hopes that scientists might be able to use the pollen to breed hardier chestnut trees. "There's something about this place that has allowed them to endure the blight," said Nathan Klaus, a biologist with the Georgia Department of Natural Resources...